Table of Contents
The most fundamental change in Jersey 3.0.0 and later is namespace change.
Since Jakarta EE 9 the
jakarta. namespace is introduced as a replacement
for javax namespace from Java EE.
Due to required jakartification several modules where omitted (because of not satisfied dependencies). Or require higher JDK (11+).
Examples and tests are reduced in quantity (so you probably will not find all those examples which were available in the 2.32 version).
ServerProperties.UNWRAP_COMPLETION_STAGE_IN_WRITER_ENABLE is by default
Jersey 3.1.0+ is the implementation of Jakarta RESTful WebServices 3.1, which is part of Jakarta EE 10. Jakarta EE 10 defines the minimum JDK 11 requirement and hence Jersey no longer supports JDK 8.
Since Jersey 3.1.0+ the
getRequestHeader(String name) method of the
ClientRequest class returns NULL (instead of an empty List) in case if
the specified header does not exist.